<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Child Page</title>
</head>

<body>
  <h1>Child Page</h1>
  <p>This is a child page.</p>
  <button>Click me</button>
  <div style="width: 100px; height: 200px; background-color: #ccc;"></div>
  <p>Something beyong 200px</p>
</body>

</html>